made cmake write its execs into CMake/Source

CMakeLists.txt

@@ -5,6 +5,9 @@ SUBDIRS(Source Modules Templates)
 # Include the standard Dart testing module
 INCLUDE (${CMAKE_ROOT}/Modules/Dart.cmake)
 
+SET(EXECUTABLE_OUTPUT_PATH ${CMake_BINARY_DIR}/Source CACHE PATH 
+  "Where to put the executables for CMake"
+)
 
 INCLUDE_REGULAR_EXPRESSION("^cm.*")